1110002020121 has 2 divisors, whose sum is σ = 1110002020122. Its totient is φ = 1110002020120.

The previous prime is 1110002020067. The next prime is 1110002020133. The reversal of 1110002020121 is 1210202000111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1097599856896 + 12402163225 = 1047664^2 + 111365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110002020121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1110002020021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555001010060 + 555001010061.

It is an arithmetic number, because the mean of its divisors is an integer number (555001010061).

Almost surely, 2^{1110002020121} is an apocalyptic number.

It is an amenable number.

1110002020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110002020121 is an equidigital number, since it uses as much as digits as its factorization.

1110002020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1110002020121 its reverse (1210202000111), we get a palindrome (2320204020232).

The spelling of 1110002020121 in words is "one trillion, one hundred ten billion, two million, twenty thousand, one hundred twenty-one".